Global Patent Index - EP 1865083 A4

EP 1865083 A4 2009-02-25 - HIGH STRENGTH HOT ROLLED STEEL SHEET EXCELLENT IN BORE EXPANDING WORKABILITY AND METHOD FOR PRODUCTION THEREOF

Title (en)

HIGH STRENGTH HOT ROLLED STEEL SHEET EXCELLENT IN BORE EXPANDING WORKABILITY AND METHOD FOR PRODUCTION THEREOF

Title (de)

HOCHFESTES HEISSGEWALZTES STAHLBLECH MIT HERVORRAGENDER AUSDEHNUNGSFÄHIGKEIT IN BOHRLÖCHERN UND HERSTELLUNGSVERFAHREN DAFÜR

Title (fr)

ACIER LAMINE A CHAUD AYANT UNE TRES HAUTE RESISTANCE ET UNE EXCELLENTE APTITUDE A LA DILATATION AU FORAGE

Publication

EP 1865083 A4 (EN)

Application

EP 06729667 A

Priority

  • JP 2006305700 W
  • JP 2005092610 A
  • JP 2005092611 A

Abstract (en)

[origin: EP1865083A1] A high-strength hot-rolled steel sheet containing C: 0.05 to 0.15%, Si: no more than 1.50% (excluding 0%), Mn: 0.5 to 2.5%, P: no more than 0.035% (excluding 0%), S: no more than 0.01% (including 0%), Al: 0.02 to 0.15%, and Ti: 0.05 to 0.2%, which is characterized in that its metallographic structure is composed of 60 to 95 vol% of bainite and solid solution-hardened or precipitation-hardened ferrite (or ferrite and martensite) and its fracture appearance transition temperature (vTrs) is no higher than 0°C as obtained by impact tests. (% in terms of % by weight)

IPC 8 full level (invention and additional information)

C22C 38/00 (2006.01); C21D 9/46 (2006.01); C22C 38/04 (2006.01); C22C 38/14 (2006.01); C22C 38/58 (2006.01)

CPC (invention and additional information)

C22C 38/02 (2013.01); C22C 38/002 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/44 (2013.01); C22C 38/48 (2013.01); C22C 38/50 (2013.01); C22C 38/58 (2013.01); C21D 8/0226 (2013.01); C21D 2211/002 (2013.01); C21D 2211/005 (2013.01)

Citation (search report)

  • [X] US 6364968 B1 20020402 - YASUHARA EIKO [JP], et al
  • [A] JP 2000087143 A 20000328 - NIPPON KOKAN KK
  • [X] EP 1195447 A1 20020410 - KAWASAKI STEEL CO [JP]
  • [A] EP 1201780 A1 20020502 - NIPPON STEEL CORP [JP]
  • [A] SLAVOV ET AL: "Impact of Coil Cooling Rate on Texture, Special Boundaries and Properties of Hot Rolled Strip", MATERIALS SCIENCE FORUM, AEDERMANNSFDORF, CH, vol. 467/470, no. Part 1, 1 January 2004 (2004-01-01), pages 323 - 328, XP009110567, ISSN: 0255-5476
  • See also references of WO 2006103991A1

Designated contracting state (EPC)

AT DE FR GB

EPO simple patent family

EP 1865083 A1 20071212; EP 1865083 A4 20090225; EP 1865083 B1 20110817; CN 101906567 A 20101208; CN 101906567 B 20140702; EP 2351867 A1 20110803; KR 100942087 B1 20100212; KR 100942088 B1 20100212; KR 20070107167 A 20071106; KR 20090050105 A 20090519; US 2009050243 A1 20090226; US 2011297281 A1 20111208; US 8038809 B2 20111018; US 8486205 B2 20130716; WO 2006103991 A1 20061005

INPADOC legal status


2016-01-29 [PG25 GB] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2012-12-21 [REG FR ST] NOTIFICATION OF LAPSE

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2012-02-15 [REG AT MK05] REVOCATION OF THE TRANSLATION OF THE EP PATENT

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2011-10-13 [REG DE R096] DPMA PUBLICATION OF MENTIONED EP PATENT GRANT

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2011-08-17 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

- Designated State(s): AT DE FR GB

2011-08-17 [REG GB FG4D] EUROPEAN PATENT GRANTED

2009-05-13 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20090416

2009-02-25 [A4] DESPATCH OF SUPPLEMENTARY SEARCH REPORT

- Effective date: 20090126

2009-02-25 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: C22C 38/00 20060101AFI20061013BHEP

2009-02-25 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: C21D 9/46 20060101ALI20090121BHEP

2009-02-25 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: C22C 38/14 20060101ALI20090121BHEP

2009-02-25 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: C22C 38/58 20060101ALI20090121BHEP

2009-02-25 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: C22C 38/04 20060101ALI20090121BHEP

2008-07-02 [DAX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT (TO ANY COUNTRY) (DELETED)

2008-07-02 [RBV] DESIGNATED CONTRACTING STATES (CORRECTION)

- Designated State(s): AT DE FR GB

2007-12-12 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20070912

2007-12-12 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

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